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- Title
Formation of Electron Transport Barriers under ECR Control of the q(r) Profile in the T-10 Tokamak.
- Authors
Razumova, K. A.; Alikaev, V. V.; Bondarenko, I. S.; Borschegovskiı, A. A.; Vershkov, V. A.; Gorshkov, A. V.; Gott, Yu. V.; Dnestrovskij, Yu. N.; Dreval, V. V.; Dremin, M. M.; Eliseev, L. G.; Kirnev, G. S.; Kislov, A. Ya.; Klimanov, I. V.; Kozachok, A. S.; Komarov, A. D.; Krupin, V. A.; Krupnik, L. I.; Krylov, S. V.; Lysenko, S.E.
- Abstract
The formation of transport barriers under electron cyclotron resonance heating and current drive in the T-10 tokamak is studied. In regimes with off-axis co-ECCD and q[sub L] < 4 at the limiter, a spontaneous transition to improved confinement accompanied by the formation of two electron transport barriers is observed. The improvement resembles an L–H transition. It manifests itself as density growth, a decrease in the D[sub α] emission intensity, and an increase in the central electron and ion temperatures. Two deep wells on the potential profile (the first one at r/a[sub L]approx. 0.6, where a[sub L] is the limiter radius, and the second one near the edge) arise during the transition. The internal barrier is formed when dq/dr∼0 with qapprox. 1 in the barrier region. © 2001 MAIK “Nauka / Interperiodica”.
- Subjects
ELECTRON transport; ELECTRON cyclotron resonance sources; TOKAMAKS
- Publication
Plasma Physics Reports, 2001, Vol 27, Issue 4, p273
- ISSN
1063-780X
- Publication type
Article
- DOI
10.1134/1.1364546